Spectral properties of laser planar waveguides based on fluoride ceramics and crystalline solid solutions
Journal of Physics Conference Series(2019)
Abstract
The spectral characteristics of the fluorine planar waveguides of the type of Me1F2-Me2F3 created by the hot-forming method with the refractive index difference between the active medium (core) and the reflective shell no more than 10(-2)-10(-4) are investigated. A planar waveguide with a core of mixed neodymium fluorite crystals CaF2-NdF3:Nd3+ with a double reflecting cladding of LiF to increase the excitation efficiency of the waveguide has shown that fluoride-based laser materials have a number of significant advantages in comparison with oxide materials, especially when creating wide-range amplifiers. With powerful lateral pumping of waveguides by matrices of laser diodes with a wavelength near 0.8 mu m and a power more than 1 kW, luminescence was observed both at the same wavelength and at two wavelengths simultaneously (near 0.9 and 1.05 mu m), which makes it possible to control their spectroscopic properties.
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Key words
laser planar waveguides,fluoride ceramics,planar waveguides,spectral properties
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